aw, come on. how many of you are inventors? everyone's an inventor. >> the way i look at it, it's really good to have a scientifically aware society. you know, when you think about stuff the world is facing right now with energy and climate, the problems that we're facing, they're going to need policy, and we're going to need to conserve and everything, but we're also going to need new technologies. >> can you taste electricity? >> no. >> oh, yes you can. >> and if you can get kids to start thinking about their inventive skills, their science skills to solve those problems, it's going to be a whole lot easier. and i find that they get it, they get it. you don't have to teach them that, they already know this. >> which do you think is a better conductor of electricity -- santiago or the steel wool? >> the one thing that i always tell children is that you can't think of one thing, truly, that doesn't touch your life that doesn't involve engineering, science, math and technology. everything from the clothes that you're wearing to the glasses, to the hair bands, to the rubber bands. everything. that's the cool thing about engineering and science. it's not just something you learn, it's something you can actually use.